CN211674608U - External locating measurer for distal femur osteotomy - Google Patents
External locating measurer for distal femur osteotomy Download PDFInfo
- Publication number
- CN211674608U CN211674608U CN202020211213.XU CN202020211213U CN211674608U CN 211674608 U CN211674608 U CN 211674608U CN 202020211213 U CN202020211213 U CN 202020211213U CN 211674608 U CN211674608 U CN 211674608U
- Authority
- CN
- China
- Prior art keywords
- osteotomy
- positioning
- indicating rod
- holding plates
- longitudinal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Surgical Instruments (AREA)
Abstract
The utility model relates to the field of medical equipment, in particular to a femur far-end osteotomy extramedullary positioning measurer, which comprises a base and an angle measuring osteotomy block; the base comprises a pair of horizontally arranged condyle holding plates and an indicating rod perpendicular to the condyle holding plates, the indicating rod is positioned between the two condyle holding plates, the bottom ends of the indicating rod are fixedly connected with the condyle holding plates on two sides, and the bottom of the indicating rod is provided with a longitudinal through groove; the angle measurement osteotomy block comprises a square positioning plate and a fan-shaped scale plate. The beneficial effects of the utility model reside in that: the method can perform positioning measurement on the bone to be cut at the distal end of the femur externally without opening the marrow of the femoral medullary cavity, so that the risks of recessive hemorrhage and fat embolism are reduced, and postoperative complications are reduced; the method can be suitable for patients with abnormal femoral medullary cavity morphology, difficult intramedullary positioning or large positioning errors; the positioning accuracy is high, and the measurement simple operation can shorten the operation time simultaneously, need not additionally to increase preoperative preparation expense.
Description
Technical Field
The utility model relates to the field of medical equipment, concretely relates to extramedullary location caliber is cut to thighbone distal end.
Background
In the process of the artificial total knee joint replacement operation, a traditional surgical instrument can determine the osteotomy surface of the distal end of the femur by inserting a positioning rod into a femoral medullary cavity, however, the operation trauma can be increased, the increase of the bleeding amount in the operation and after the operation is caused, the risk of fat embolism in the operation is increased, even the life of a patient is threatened, if the femur of the patient has a larger anterior arch radian, the force line can not be ensured to be vertical to the osteotomy surface of the distal end of the femur, the deviation of the osteotomy surface is caused, and the installation of a knee joint prosthesis is influenced. In addition, when the patient presents with certain factors, such as: when the femoral stem is long or the femoral end is deformed and cannot be smoothly inserted into the positioning rod after the unilateral hip joint replacement, the long positioning rod cannot be used or the positioning cannot be used, the traditional operation cannot be carried out.
With the rapid development of computer science and technology, digital technology is widely applied to clinical work and is gradually introduced into wider fields, such as surgical navigation, virtual simulation, surgical design and the like, so that the traditional medicine develops towards the modern medical direction of individuation, precision and minimally invasive. However, there is a certain error in the preoperative registration of the navigation system. The 3D printing artificial joint operation guide plate can customize an individual model for a patient, so that the technical problems of prosthesis model selection, prosthesis placement position accuracy, deformity correction degree and the like in joint replacement are solved. However, the 3D printing technology is not widely popularized yet, the use cost is high, and the time consumption is long. And 3D printing technique still regards knee joint bony identification as the basis of preparation bone cutting guide plate, and there is the error in the intraoperative operation need remove exposure subchondral bone and lay the guide plate.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: when the artificial total knee joint replacement surgery is carried out, the intramedullary positioning is difficult or has larger error, and the recessive bleeding is increased and the fat embolism risk exists.
In order to solve the technical problem, the utility model discloses a technical scheme be: a femur far-end osteotomy extramedullary positioning measurer comprises a base and an angle measuring osteotomy block;
the base comprises a pair of horizontally arranged condyle holding plates and an indicating rod perpendicular to the condyle holding plates, the indicating rod is positioned between the two condyle holding plates, the bottom ends of the indicating rod are fixedly connected with the condyle holding plates on two sides, and the bottom of the indicating rod is provided with a longitudinal through groove;
the angle measurement osteotomy block comprises a square positioning plate and a fan-shaped scale plate, a rotating shaft is arranged in the middle of the positioning plate, the rotating shaft penetrates through a longitudinal through groove and is connected in the longitudinal through groove of the indicating rod in a sliding mode, an osteotomy groove is formed in the bottom of the positioning plate, positioning holes which are arranged in pairs are formed in the top of the positioning plate and are parallel to each other, a connecting line between the positioning holes is parallel to the osteotomy groove, the bottom end of the scale plate is fixedly connected to the top end of the positioning plate, angle scale lines are arranged at the top of the scale plate along the arc direction, and.
The beneficial effects of the utility model reside in that: the method can perform positioning measurement on the bone to be cut at the distal end of the femur externally without opening the marrow of the femoral medullary cavity, so that the risks of recessive hemorrhage and fat embolism are reduced, and postoperative complications are reduced; the method can be suitable for patients with abnormal femoral medullary cavity morphology, difficult intramedullary positioning or large positioning errors; the positioning accuracy is high, and the measurement simple operation can shorten the operation time simultaneously, need not additionally to increase preoperative preparation expense.
Drawings
FIG. 1 is a schematic diagram of a distal femur osteotomy extramedullary location measurer in accordance with an embodiment of the present invention;
FIG. 2 is a front view of a distal femur osteotomy extramedullary positioning gauge in accordance with an embodiment of the present invention;
FIG. 3 is a schematic view of a base structure according to an embodiment of the present invention;
FIG. 4 is a schematic view of an angle measurement osteotomy block according to an embodiment of the present invention;
FIG. 5 is a schematic view of the distal femur osteotomy extramedullary location measuring device according to the embodiment of the present invention in use;
description of reference numerals:
1-holding the condyle plate; 2-an indicator stem; 21-longitudinal through grooves; 22-scribing; 3, positioning a plate; 31-a rotating shaft; 32-osteotomy groove; 33-positioning holes; 4-a scale plate; 41-angle scale mark; 5-femur; 6-condylar cartilage surface.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
The utility model discloses the most crucial design lies in: this application can externally treat the department of cutting the bone to the thighbone distal end and carry out the location measurement, and need not open the marrow to the thighbone marrow cavity, reduces recessive hemorrhage and fat embolism risk, reduces postoperative complication.
Referring to fig. 1 to 5, the utility model relates to a femur far-end osteotomy extramedullary positioning measurer, which comprises a base and an angle measuring osteotomy block;
the base comprises a pair of horizontally arranged condyle holding plates 1 and an indicating rod 2 perpendicular to the condyle holding plates 1, the indicating rod 2 is positioned between the two condyle holding plates 1, the bottom end of the indicating rod 2 is fixedly connected with the condyle holding plates 1 on two sides, and the bottom of the indicating rod 2 is provided with a longitudinal through groove 21;
the angle measurement osteotomy piece includes square locating plate 3 and sectorial scale plate 4, 3 middle parts of locating plate are equipped with pivot 31, pivot 31 passes vertical logical groove 21 and sliding connection in the vertical logical groove 21 of indicator lever 2, osteotomy groove 32 has been seted up to 3 bottoms of locating plate, locating plate 3 tops have been seted up locating hole 33 that sets up in pairs, and is a pair of line between the locating hole 33 is parallel with osteotomy groove 32, 4 bottom fixed connection of scale plate are in 3 tops of locating plate, 4 tops of scale plate are equipped with angle scale mark 41 along the arc direction, the directional angle scale mark 41 in 2 tops of indicator lever.
The utility model discloses a theory of operation does: as shown in fig. 5, when the distal femur 5 distal osteotomy extramedullary location measuring instrument is used, the condylar plates 1 on both sides of the base are abutted against the distal femur 5 of the knee joint femur 5 at the same time, the rotating shaft 31 of the angle measurement osteotomy block slides in the longitudinal through groove 21 to the intercondylar cartilage junction, the angle scale lines 41 on the top of the scale plate 4 of the angle measurement osteotomy block are bilaterally symmetrical, the middle part is a zero scale line, the measuring ranges on the left side and the right side of the zero scale line are both 0-15 degrees, and the minimum division value is 0.1.
The scale plate 4 is adjusted according to the angle value determined before the operation, so that the top end of the indicating rod 2 points to the corresponding numerical value on the angle scale mark 41, the positioning nail is nailed into the femur 5 from the positioning hole 33 on the positioning plate 3, namely, the distal end of the femur 5 is positioned outside the marrow, and the distal end of the femur 5 is cut along the cutting groove 32 below the scale plate 4.
As can be seen from the above description, the utility model has the advantages that: the method can perform positioning measurement on the bone to be cut at the distal end of the femur externally without opening the marrow of the femoral medullary cavity, so that the risks of recessive hemorrhage and fat embolism are reduced, and postoperative complications are reduced; the method can be suitable for patients with abnormal femoral medullary cavity morphology, difficult intramedullary positioning or large positioning errors; the positioning accuracy is high, and the measurement simple operation can shorten the operation time simultaneously, need not additionally to increase preoperative preparation expense.
Furthermore, three osteotomy grooves 32 are formed along the longitudinal direction, and the three osteotomy grooves 32 are arranged in parallel.
As can be seen from the above description, the provision of the three osteotomy slots facilitates the surgeon to select the osteotomy amount during the surgical procedure based on the actual situation.
Further, the longitudinal spacing between any adjacent osteotomy slots 32 is 2 mm.
Furthermore, three pairs of positioning holes 33 are formed along the longitudinal direction, and any two pairs of positioning holes 33 adjacent to each other along the longitudinal direction are arranged in a staggered manner.
According to the description, three pairs of positioning holes can be convenient for a doctor to select the arrangement position of the positioning nail according to actual conditions in the operation process, the adjacent positioning holes are arranged in a staggered mode, so that interference between the positioning nails is avoided, when the longitudinal position of the positioning nail needs to be changed in the operation process, the original positioning nail needs to be taken out and re-nailed into a new positioning hole, if the positioning holes are not arranged in a staggered mode, the newly-installed positioning nail is easily influenced by the original hole position, and the positioning nail is easy to fall off.
Further, the longitudinal interval between any two pairs of the positioning holes 33 adjacent in the longitudinal direction is 2 mm.
Furthermore, the middle part of the top end of the indication rod 2 is provided with a scribed line 22.
As can be seen from the above description, the middle part of the top end of the indication rod is provided with the scribed line, so that a doctor can align the top end of the indication rod with the angle scale mark more clearly in the operation process, and the positioning precision is improved.
Example one
A femur far-end osteotomy extramedullary positioning measurer comprises a base and an angle measuring osteotomy block;
the base comprises a pair of horizontally arranged condyle holding plates 1 and an indicating rod 2 perpendicular to the condyle holding plates 1, the indicating rod 2 is positioned between the two condyle holding plates 1, the bottom end of the indicating rod 2 is fixedly connected with the condyle holding plates 1 on two sides, a longitudinal through groove 21 is formed in the bottom of the indicating rod 2, and a scribed line 22 is arranged in the middle of the top end of the indicating rod 2;
the angle measurement osteotomy block comprises a square positioning plate 3 and a fan-shaped scale plate 4, a rotating shaft 31 is arranged in the middle of the positioning plate 3, the rotating shaft 31 penetrates through a longitudinal through groove 21 and is connected in the longitudinal through groove 21 of the indicating rod 2 in a sliding manner, an osteotomy groove 32 is formed in the bottom of the positioning plate 3, positioning holes 33 arranged in pairs are formed in the top of the positioning plate 3, a connecting line between the pair of positioning holes 33 is parallel to the osteotomy groove 32, the bottom end of the scale plate 4 is fixedly connected to the top end of the positioning plate 3, angle scale lines 41 are formed in the top of the scale plate 4 along the arc direction, and the top end of the indicating rod 2;
the osteotomy grooves 32 are longitudinally provided in three numbers, the three osteotomy grooves 32 are arranged in parallel, and the longitudinal distance between any adjacent osteotomy grooves 32 is 2 mm;
the positioning holes 33 are longitudinally provided with three pairs, and any two pairs of the positioning holes 33 which are longitudinally adjacent are arranged in a staggered manner. The longitudinal spacing between any two pairs of longitudinally adjacent positioning holes 33 is 2 mm.
To sum up, the utility model provides a beneficial effect lies in: the method can perform positioning measurement on the bone to be cut at the distal end of the femur externally without opening the marrow of the femoral medullary cavity, so that the risks of recessive hemorrhage and fat embolism are reduced, and postoperative complications are reduced; the method can be suitable for patients with abnormal femoral medullary cavity morphology, difficult intramedullary positioning or large positioning errors; the positioning accuracy is high, and the measurement simple operation can shorten the operation time simultaneously, need not additionally to increase preoperative preparation expense. The three osteotomy grooves are formed, so that a doctor can select the osteotomy amount according to the actual situation in the operation process. Three pairs of locating holes can be convenient for the doctor at the operation in-process according to actual conditions selection location nail's arrangement department, and adjacent locating hole crisscross setting each other is then in order to avoid taking place to interfere between the locating nail, when the longitudinal position of operation in-process need change the locating nail, need take out former locating nail and follow the nail into new locating hole again, if the locating hole does not have crisscross setting, make the locating nail of reinstalling receive original hole site to influence easily, and lead to the locating nail to take place to drop easily. The middle part of the top end of the indicating rod is provided with the scribed line, so that a doctor can align the top end of the indicating rod with the angle scale mark more clearly in the operation process, and the positioning precision is improved.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (6)
1. A femur far-end osteotomy extramedullary positioning measurer is characterized by comprising a base and an angle measuring osteotomy block;
the base comprises a pair of horizontally arranged condyle holding plates and an indicating rod perpendicular to the condyle holding plates, the indicating rod is positioned between the two condyle holding plates, the bottom ends of the indicating rod are fixedly connected with the condyle holding plates on two sides, and the bottom of the indicating rod is provided with a longitudinal through groove;
the angle measurement osteotomy block comprises a square positioning plate and a fan-shaped scale plate, a rotating shaft is arranged in the middle of the positioning plate, the rotating shaft penetrates through a longitudinal through groove and is connected in the longitudinal through groove of the indicating rod in a sliding mode, an osteotomy groove is formed in the bottom of the positioning plate, positioning holes which are arranged in pairs are formed in the top of the positioning plate and are parallel to each other, a connecting line between the positioning holes is parallel to the osteotomy groove, the bottom end of the scale plate is fixedly connected to the top end of the positioning plate, angle scale lines are arranged at the top of the scale plate along the arc direction, and.
2. The distal femur osteotomy extramedullary positioning gauge of claim 1, wherein the osteotomy slots are longitudinally opened in three numbers, and the three osteotomy slots are arranged in parallel with each other.
3. The distal femoral osteotomy extramedullary localizer of claim 2, wherein the longitudinal spacing between any adjacent osteotomy slots is 2 mm.
4. The device of claim 1, wherein three pairs of positioning holes are formed along the longitudinal direction, and any two pairs of positioning holes adjacent to each other along the longitudinal direction are staggered with each other.
5. The distal femoral osteotomy extramedullary location measurer of claim 4, wherein a longitudinal spacing between any two pairs of longitudinally adjacent pilot holes is 2 mm.
6. The distal femoral osteotomy extramedullary localizer of claim 1, wherein the indicator stem is provided with a score line in the middle of its tip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020211213.XU CN211674608U (en) | 2020-02-26 | 2020-02-26 | External locating measurer for distal femur osteotomy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020211213.XU CN211674608U (en) | 2020-02-26 | 2020-02-26 | External locating measurer for distal femur osteotomy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211674608U true CN211674608U (en) | 2020-10-16 |
Family
ID=72778351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020211213.XU Expired - Fee Related CN211674608U (en) | 2020-02-26 | 2020-02-26 | External locating measurer for distal femur osteotomy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211674608U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113729909A (en) * | 2021-08-24 | 2021-12-03 | 北京长木谷医疗科技有限公司 | Knee joint nail-placing guide plate |
-
2020
- 2020-02-26 CN CN202020211213.XU patent/CN211674608U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113729909A (en) * | 2021-08-24 | 2021-12-03 | 北京长木谷医疗科技有限公司 | Knee joint nail-placing guide plate |
| CN113729909B (en) * | 2021-08-24 | 2023-03-03 | 北京长木谷医疗科技有限公司 | Knee joint nail-placing guide plate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10973529B2 (en) | Patient-specific surgical guide | |
| US5417694A (en) | Distal femoral cutting guide apparatus with anterior or posterior referencing for use in knee joint replacement surgery | |
| US5720752A (en) | Distal femoral cutting guide apparatus with anterior or posterior referencing for use in knee joint replacement surgery | |
| AU2015222741B2 (en) | System and methods for positioning bone cut guide | |
| EP3096694B1 (en) | Skin-referencing surgical guides | |
| EP2623045A1 (en) | Surgical instrumentation set and surgical technique | |
| US20190328409A1 (en) | Patient-matched total knee arthroscopy | |
| EP2434964A2 (en) | Methods and apparatus for performing knee arthroplasty | |
| CN107049415B (en) | Femur distal osteotomy positioning guide device and positioning method thereof | |
| CN106264752B (en) | Distal femur and front and back condyle measurement and positioning osteotomy device for knee replacements | |
| US20220192774A1 (en) | Knee instruments and methods | |
| CN211674608U (en) | External locating measurer for distal femur osteotomy | |
| CN206198055U (en) | DF and front and rear condyle measurement and positioning osteotomy device for knee replacements | |
| US20170027588A1 (en) | Combined Measured Resection Methods and Instruments for Knee Arthroplasty | |
| EP3257459B1 (en) | Distraction kit | |
| US20200107942A1 (en) | Two-piece total knee rotation guide and femoral sizer system and method | |
| CN209122422U (en) | A kind of personalized customization 3D printing osteotomy guide plate | |
| CN110720962A (en) | Bone cutting system for knee joint replacement | |
| CN211131266U (en) | Bone cutting system for knee joint replacement | |
| CN108784821A (en) | A kind of personalized customization 3D printing osteotomy guide plate and its application method | |
| RU220840U1 (en) | PERSONALIZED TEMPLATE FOR RESECTION AT THE LEVEL OF THE ANATOMICAL NECK OF THE HUMERUS IN REVERSE ENDOPROSTHETICS OF THE HUMERAL JOINT | |
| CN210784536U (en) | Four-in-one osteotomy plate | |
| Khare et al. | Clinical Variability of Landmark Collection in an Imageless Robot-Assisted Total Knee Arthroplasty System | |
| WO2022192469A1 (en) | Knee instruments | |
| Stiehl et al. | Navigation in TKA with the Navitrack System |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201016 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |